Joy Kolker, PHD
NPI 1508162686 · Clinical Psychologist · Santa Rosa, CA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joy Kolker, PHD is a Clinical Psychologist provider in Santa Rosa, CA (NPI 1508162686).
Provider details
- NPI number
- 1508162686
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 23656 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-02-07
- Last updated
- 2015-12-09
Frequently asked questions
- What is Joy Kolker's NPI number?
- Joy Kolker's National Provider Identifier (NPI) is 1508162686, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joy Kolker's specialty?
- Joy Kolker is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Joy Kolker located?
- Joy Kolker's practice location on file with NPPES is 818 Cherry St, Santa Rosa, CA 95404-4207.
- What is Joy Kolker's phone number?
- The practice phone number listed in the NPPES registry for Joy Kolker is (707) 257-7900.
- Does Joy Kolker accept Medicare?
- Joy Kolker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joy Kolker's NPI active?
- Yes — Joy Kolker's NPI (1508162686) is active in the NPPES registry as of the last update on 2015-12-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.